c1bd9b0361
* Introduce CONFIG_BATTERY_MEASURE define, to allow targets (application) to break powermgmt.c's assumption about the ability to read battery voltage. There's now additionally percentage (android) and remaining time measure (maemo). No measure at all also works (sdl app). If voltage can't be measured, then battery_level() is king and it'll be used for power_history and runtime estimation. * Implement target's API in the simulator, i.e. _battery_voltage(), so it doesn't need to implement it's own powermgmt.c and other stubs. Now the sim behaves much more like a native target, although it still changes the simulated battery voltage quickly, * Other changes include include renaming battery_adc_voltage() to _battery_voltage(), for consistency with the new target functions and making some of the apps code aware that voltage and runtime estimation is not always available. git-svn-id: svn://svn.rockbox.org/rockbox/trunk@31548 a1c6a512-1295-4272-9138-f99709370657
75 lines
2.3 KiB
C
75 lines
2.3 KiB
C
/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (C) 2002 by Heikki Hannikainen, Uwe Freese
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* Revisions copyright (C) 2005 by Gerald Van Baren
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#include "config.h"
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#include "system.h"
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#include "adc.h"
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#include "power.h"
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#include "powermgmt.h"
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const unsigned short battery_level_dangerous[BATTERY_TYPES_COUNT] =
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{
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3450
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};
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const unsigned short battery_level_shutoff[BATTERY_TYPES_COUNT] =
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{
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3400
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};
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/* voltages (millivolt) of 0%, 10%, ... 100% when charging disabled */
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const unsigned short percent_to_volt_discharge[BATTERY_TYPES_COUNT][11] =
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{
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/* Toshiba Gigabeat Li Ion 830mAH figured from discharge curve */
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{ 3480, 3550, 3590, 3610, 3630, 3650, 3700, 3760, 3800, 3910, 3990 },
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};
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/* voltages (millivolt) of 0%, 10%, ... 100% when charging enabled */
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const unsigned short percent_to_volt_charge[11] =
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{
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/* Toshiba Gigabeat Li Ion 830mAH */
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3480, 3550, 3590, 3610, 3630, 3650, 3700, 3760, 3800, 3910, 3990
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};
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/* ADC[0] is (530) at discharge and 625 at full charge */
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#define BATTERY_SCALE_FACTOR 6605
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/* full-scale ADC readout (2^10) in millivolt */
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/* Returns battery voltage from ADC [millivolts] */
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int _battery_voltage(void)
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{
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return (adc_read(ADC_UNREG_POWER) * BATTERY_SCALE_FACTOR) >> 10;
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}
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unsigned int input_millivolts(void)
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{
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unsigned int batt_millivolts = battery_voltage();
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if ((power_thread_inputs & POWER_INPUT_BATTERY) == 0) {
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/* Just return a safe value if battery isn't connected */
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return 4050;
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}
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return batt_millivolts;
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}
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